386 > RADIOLOGICAL CLEANUP OF ENEWETAK ATOLL FIGURE 7-46. PACE TEST SITE - AFTER RESTORATION, (EPA). Dr. Bramlitt’s calculations for transuranic element dose generally agreed with those of the March 1978 LLL study except that Dr. Bramlitt’s inhalation dose to bone was well below the LLL estimate. Also, Dr. Bramlitt had concluded that Runit could safely be used for coconut agriculture, in contrast to the assumptions of earlier studies. The most significant comment received on Dr. Bramlitt’s draft dose estimate study was that significant differences were evident between this study and the LLLdraft dose estimate of March 1978. In particular, it was recognized that, becauseof an error in computation, the inhalation dose to bone from transuranic elements in the LLL study should have been a factor of ten lower than was presented.>! Thus, it was possible that these high LLL dose estimates had been taken into consideration by the DOE Enewetak Advisory Group when it recommended, on 27 April 1978, the reduction of soil transuranic cleanup criteria from 40/100/400 pCi/g to 40/80/160 pCi/g. While DOE had maintained that cleanup to 40/80/160 pCi/g would lead to 13 mrad/year bone does (as compared to the 3 mrad/year EPA guideline), the Bramlitt data indicated that cleanup to 40/100/400 pCi/g would produce only 5 mrad/year bone dose. Dr. Bramlitt’s study indicated that the most significant predicted dose under the Case3 lifestyle was from fission products ingested as a result of consuming coconuts grown in the northern islands. These radionuclides, primarily strontium and cesium, are by-products of fission reactions such